Effective Storage Of Semantic Web Data

The Semantic Web is an extension of the traditional Web aimed at facilitating information and knowledge sharing. In this context, RDF has been conceived as a means for a simple representation of any kind of data and metadata, according to a graph-based, lightweight model and a straight XML serialization. Although RDF has the advantage of being general and easy to use, it cannot be adopted as a storage model, since it can be easily shown that even simple data management operations yield serious performance problems. In this paper, we present a novel approach for storing, managing and processing RDF data in an effective and efficient way. The approach is based on a logical organization that is particularly suited for RDF constructs, but it can he easily extended to other RDF-based languages, such as OWL.